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Measurement and Instrumentation

Measurement and Instrumentation
The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is

 3 mA.
 4 mA.
 1 mA.
 2 mA.

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Measurement and Instrumentation
The moving coil-meters, damping is provided by

 the coil spring attached to the moving.
 the aluminium frame of the coil.
 eddy current disk.
 damping vane in the airtight chamber.

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Measurement and Instrumentation
Resistance of a VARISTOR varies with

 Both Voltage and Temperature
 Voltage
 Temperature
 Current

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Measurement and Instrumentation
The measured value of a resistance is 10.25 ohm, whereas its value of 10.22 ohm. What is absolute error of the measurement?

 10.26 ohm.
 15.36 ohm.
  0.03 ohm.
 0.01 ohm.

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Measurement and Instrumentation
Systematic errors are

 observational errors.
 environmental errors.
 instrument errors.
All of these

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Measurement and Instrumentation
The resistance in the circuit of the moving coil of a dynamometer wattmeter should be

None of the listed here
Low
Almost zero
High

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MORE MCQ ON Measurement and Instrumentation

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